You may have hear about nasty outbreaks of the highly contagious norovirus on cruise ships. According to records kept by the Centers for Disease Control and Prevention (CDC), in the first half of 2014, eight cruise vessels had reported outbreaks of norovirus, resulting in passengers becoming infected and experiencing diarrhea and vomiting for several days. Each year there are a number of norovirus...

In April 2014, over 100 passengers on a week-long Crown Princess cruise had their vacation dampened by illness. The cruise ship, which was traveling along the coast of Southern California and Mexico, had an outbreak of norovirus, causing gastrointestinal illness in many crew members and passengers. The very same week, two consecutive cruises on the same Royal Caribbean ship had similar outbreaks of...